Terrestrial Invasives

Whether they arrived accidentally or whether people brought them here intentionally, terrestrial invasive species are having a great effect on DuPage County’s natural areas. The list below features a few of the more prevalent species.

Asian Long-Horned Beetle

The Asian long-horned beetle (Anoplophora glabripennis) is a nonnative insect that over time can kill infested tree.
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Bird's Foot Trefoil

Bird’s Foot Trefoil (Lotus corniculatus) is a perennial plant in the legume family from Eurasia. The flowers – bright yellow and often with fine red lines – develop into small pea-like pods.
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Buckthorn

Common and glossy buckthorn (Rhamnus cathartica and Rhamnus frangula) originated in Eurasia as ornamental shrubs.
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Crown Vetch

Crown Vetch (Coronilla varia) is perennial plant in the legume family from Eurasia that was introduced to the United States in the 1950’s for erosion control. Its creeping stems can reach two to six feet in length.
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Emerald Ash Borer

The emerald ash borer (Agrilus planipennis) is a nonnative Eurasian beetle that has destroyed over 20 million ash trees in the Midwest.
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European Starling

The nonnative European starling (Sturnus vulgaris) is a dark, iridescent robin-sized bird with light speckles.
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Garlic Mustard

Garlic mustard (Alliaria petiolata) is a biennial forb that originated in Europe.
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Gypsy Moth

The gypsy moth (Lymantria dispar) is an invasive European species.
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Honeysuckle

Honeysuckles, such as amur (Lonicera maackii) and common fly (Lonicera X muendeniensis) honeysuckle, originated in Eurasia as ornamental shrubs.
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House Sparrow

The house sparrow (Passer domesticus), or English sparrow, was brought to New York in the 1850s to control insects that were damaging crops.
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Oriental Bittersweet

Oriental bittersweet (Celastrus orbiculatus) is a woody vine introduced from eastern Asia in the 1860s as an ornamental plant. It is typically found in old homesites, forested edges, woodlands, successional fields, and hedgerows.
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Red-Eared Slider

Red-eared sliders are turtles that are native to the southern United States but not to Illinois.
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Teasel

Common and cut-leaved teasel (Dipsacus sylvestris and Dipsacus laciniatus) are short-lived perennials that originated in Europe.
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